EP0921631A1 - Geschwindigkeitsregelverfahren für einen einphasigen Asynchronmotor - Google Patents

Geschwindigkeitsregelverfahren für einen einphasigen Asynchronmotor Download PDF

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Publication number
EP0921631A1
EP0921631A1 EP98811029A EP98811029A EP0921631A1 EP 0921631 A1 EP0921631 A1 EP 0921631A1 EP 98811029 A EP98811029 A EP 98811029A EP 98811029 A EP98811029 A EP 98811029A EP 0921631 A1 EP0921631 A1 EP 0921631A1
Authority
EP
European Patent Office
Prior art keywords
switches
closing
winding
auxiliary
windings
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP98811029A
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English (en)
French (fr)
Inventor
Jean-Michel Orsat
Serge Bruno
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Somfy SA
Original Assignee
Somfy SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Somfy SA filed Critical Somfy SA
Publication of EP0921631A1 publication Critical patent/EP0921631A1/de
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
    • H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
    • H02P25/04—Single phase motors, e.g. capacitor motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
    • H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
    • H02P1/42—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual single-phase induction motor

Definitions

  • the subject of the present invention is a method of speed control of an asynchronous motor at single-phase induction, the stator of which is equipped with main winding and an auxiliary winding consisting of magnetically coupled half-windings and wound in opposite directions, so that a current of determined direction created in these half-windings magnetic fields of opposite directions, according to which the main winding is supplied directly from an alternating current source and the auxiliary winding by means of a current delivered by a full wave rectifier and at by means of two switching switches, respectively in series with each of the half windings auxiliary and controlled by a circuit of control ensuring the closing / opening of switches at a frequency equal to the frequency of the supply voltage, so as to generate in the auxiliary winding an alternating voltage 90 ° out of phase relative to the voltage in the main winding.
  • the circuit for control consists of a bistable multivibrator ensuring the alternating switching of two transistors, respectively in series with each of the half windings auxiliaries.
  • the winding auxiliary creates a 90 ° phase shifted field relative to the field produced by the winding main, which has the effect of driving the rotor of the motor in rotation. No means are provided for change the engine speed.
  • the object of the present invention is to control the speed of a motor of the type defined above by a process simpler to implement than the process according to the prior art.
  • the method according to the invention is characterized in that that we vary the engine torque by modifying the closing / opening time of at least one of switches controlling the supply of each of the auxiliary half-windings.
  • the motor is braked by reducing the closing time of at least one of the switches at during each period of source voltage, from so that the closing time is less than half a period of the supply voltage.
  • the engine torque is reduced by increasing the closing time by at least one of the switches, during each voltage period feed, so that the time to closure be greater than half a period of the supply voltage.
  • control circuit preferably, a microprocessor.
  • the motor is shown schematically by its rotor R, its main winding BP and its auxiliary winding B1 / B2.
  • the main winding BP is supplied directly by the voltage power supply, here sector P, N, while the auxiliary winding is powered by via a Graetz GR bridge which straightens the negative half-waves so as to obtain a voltage composed only of half-vibrations positive, as shown in Figure 2b of the patent US 4,520,303.
  • the auxiliary winding consists of two half-windings B1 and B2 having a common terminal and wound in opposite directions so that a voltage applied between this common terminal and the two terminals independent of the half-windings causes, in a winding of winding B1, a magnetic flux of meaning opposite to that caused in a turn near winding B2 and that the resulting magnetic flux in the air gap between the stator and the rotor is zero.
  • the current in the half windings B1 and B2 is controlled by two switches T1 and T2, respectively in series with the half winding B1 and half winding B2 and with the GR bridge.
  • the switches T1 and T2 will be in general made up of transistors, preferably field effect transistors. These transistors are controlled by a control circuit C connected to the output diagonal of GR and consisting of a microprocessor, i.e. a logical unit of ULT processing, RAM memory, ROM memory and an I / O input / output interface.
  • a microprocessor i.e. a logical unit of ULT processing, RAM memory, ROM memory and an I / O input / output interface.
  • An order manual CM allows to modify times opening / closing of switches T1, T2 stored in control circuit C.
  • switches T1 and T21 are open and closed alternately and for the same duration, so that the half-vibrations of the voltage taken on the GR bridge are applied alternately to the half winding B1 and half winding B2, we create, in one of the half-windings, for example B1, a field having the appearance shown in FIG. 3 and, in the other half-winding, a field of the same shape, but of reverse polarity and 90 ° phase shifted. Field auxiliary resulting in the shape shown in the figure 2 and US Patent 4,520,303.
  • the requested cancellation of the field resulting from the combination of fields in the two half-windings B1 and B1 can also be obtained by adding or overlap, that is, from a perfectly alternating closing / opening and similarly duration of switches T1 and T2, increasing the closing time of one of the switches T1 or T2 or two switches at the same time.
  • This operating mode is illustrated in Figures 5 to 9.
  • FIG. 5 shows again the appearance of the created field in the main winding BP which corresponds to the shape of the AC supply voltage.
  • the Figures 6 and 5 again show the appearance of fields created in the two half-windings B1 and B2.
  • the T1 switch is closed periodically for two exactly consecutive quarter periods.
  • the closure of the switch T2 is however extended at the end of each period. This extension corresponds to the hatched area D, Figure 7.
  • Field auxiliary resulting from the combination of fields in B1 and B2 therefore cancel each other out periodically for a period corresponding to the width of the hatched area D, this which has the effect of braking the engine.
  • the extension of the closing time of one of the switches, for example T2 can be done by advancing the start of the closure of T1 or T2 or at the times by advancing the start of the closure of T1 or T2 and extending the duration of the closure, for the quarter-cycle alternation F.
  • the first mode of execution amounts to undernourishing the engine where a slight jerky effect
  • the second mode of execution there is no jerky effect, but the engine braking is achieved by increasing the current consumption.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Ac Motors In General (AREA)
EP98811029A 1997-12-08 1998-10-16 Geschwindigkeitsregelverfahren für einen einphasigen Asynchronmotor Withdrawn EP0921631A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9715471 1997-12-08
FR9715471A FR2772212B1 (fr) 1997-12-08 1997-12-08 Procede de commande de la vitesse d'un moteur asynchrone a induction monophasee

Publications (1)

Publication Number Publication Date
EP0921631A1 true EP0921631A1 (de) 1999-06-09

Family

ID=9514289

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98811029A Withdrawn EP0921631A1 (de) 1997-12-08 1998-10-16 Geschwindigkeitsregelverfahren für einen einphasigen Asynchronmotor

Country Status (4)

Country Link
US (1) US5990653A (de)
EP (1) EP0921631A1 (de)
ES (1) ES2133264T1 (de)
FR (1) FR2772212B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2911735A1 (fr) * 2007-01-23 2008-07-25 Leroy Somer Moteurs Procede d'alimentation d'un moteur electrique monophase et systeme d'alimentation pour la mise en oeuvre d'un tel procede.
WO2009013693A1 (fr) * 2007-07-23 2009-01-29 Somfy Sas Dispositif d'alimentation d'un actionneur domotique et procede de fonctionnement d'un tel dispositif

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7389806B2 (en) 2005-02-24 2008-06-24 Lawrence Kates Motorized window shade system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4459532A (en) * 1982-07-29 1984-07-10 Eaton Corporation H-Switch start-up control for AC motor
US4520303A (en) * 1983-02-21 1985-05-28 Associated Electrical Industries Limited Induction motors
EP0291803A2 (de) * 1987-05-21 1988-11-23 VDO Adolf Schindling AG Schaltungsanordnung zur getakteten Ansteuerung von Halbleiterschaltern
FR2717017A1 (fr) * 1994-03-04 1995-09-08 Somfy Dispositif d'alimentation pour moteur électrique à courant alternatif.
EP0744824A1 (de) * 1995-05-26 1996-11-27 Philips Patentverwaltung GmbH Schaltungsanordnung zum Speisen eines Zweiphasen-Asynchronmotors

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4658195A (en) * 1985-05-21 1987-04-14 Pt Components, Inc. Motor control circuit with automatic restart of cut-in
DE4215263C1 (de) * 1992-02-14 1993-04-29 Grundfos A/S, Bjerringbro, Dk
IT1254734B (it) * 1992-03-24 1995-10-10 Faac Spa Metodo e dispositivo per il controllo della velocita' di motori asincroni
US5402053A (en) * 1993-08-26 1995-03-28 Wisconsin Alumni Research Foundation Single phase to three phase converter capable of variable speed motor operation

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4459532A (en) * 1982-07-29 1984-07-10 Eaton Corporation H-Switch start-up control for AC motor
US4520303A (en) * 1983-02-21 1985-05-28 Associated Electrical Industries Limited Induction motors
EP0291803A2 (de) * 1987-05-21 1988-11-23 VDO Adolf Schindling AG Schaltungsanordnung zur getakteten Ansteuerung von Halbleiterschaltern
FR2717017A1 (fr) * 1994-03-04 1995-09-08 Somfy Dispositif d'alimentation pour moteur électrique à courant alternatif.
EP0744824A1 (de) * 1995-05-26 1996-11-27 Philips Patentverwaltung GmbH Schaltungsanordnung zum Speisen eines Zweiphasen-Asynchronmotors

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2911735A1 (fr) * 2007-01-23 2008-07-25 Leroy Somer Moteurs Procede d'alimentation d'un moteur electrique monophase et systeme d'alimentation pour la mise en oeuvre d'un tel procede.
EP1950877A1 (de) 2007-01-23 2008-07-30 Moteurs Leroy Somer Bestromungsverfahren eines elektrischen Einphasenmotors und Bestromungssystem zum Umsetzen eines solchen Verfahrens
WO2009013693A1 (fr) * 2007-07-23 2009-01-29 Somfy Sas Dispositif d'alimentation d'un actionneur domotique et procede de fonctionnement d'un tel dispositif
FR2919444A1 (fr) * 2007-07-23 2009-01-30 Somfy Sas Dispositif d'alimentation d'un actionneur domotique et procede de fonctionnement d'un tel dispositif

Also Published As

Publication number Publication date
US5990653A (en) 1999-11-23
FR2772212B1 (fr) 2000-02-04
FR2772212A1 (fr) 1999-06-11
ES2133264T1 (es) 1999-09-16

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